As far as I know nothing particular as a Metadata topic but it is mentioned many times in other threads. I am hesitant to move your thread at the moment but you might instead like to check out this one I link to at least and see if your topic may fit in there:
There are others you could search just on metadata and you will get a few hits. Let us know if you want it moved to another…please note @BrendanMays or another moderator may move it in the meantime if they find a better fit.
